diff options
Diffstat (limited to 'meta/lib/oe/patch.py')
-rw-r--r-- | meta/lib/oe/patch.py | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/meta/lib/oe/patch.py b/meta/lib/oe/patch.py index e1f1c53bef..afb0013a4b 100644 --- a/meta/lib/oe/patch.py +++ b/meta/lib/oe/patch.py @@ -92,6 +92,69 @@ class PatchSet(object): def Refresh(self, remote = None, all = None): raise NotImplementedError() + @staticmethod + def getPatchedFiles(patchfile, striplevel, srcdir=None): + """ + Read a patch file and determine which files it will modify. + Params: + patchfile: the patch file to read + striplevel: the strip level at which the patch is going to be applied + srcdir: optional path to join onto the patched file paths + Returns: + A list of tuples of file path and change mode ('A' for add, + 'D' for delete or 'M' for modify) + """ + + def patchedpath(patchline): + filepth = patchline.split()[1] + if filepth.endswith('/dev/null'): + return '/dev/null' + filesplit = filepth.split(os.sep) + if striplevel > len(filesplit): + bb.error('Patch %s has invalid strip level %d' % (patchfile, striplevel)) + return None + return os.sep.join(filesplit[striplevel:]) + + copiedmode = False + filelist = [] + with open(patchfile) as f: + for line in f: + if line.startswith('--- '): + patchpth = patchedpath(line) + if not patchpth: + break + if copiedmode: + addedfile = patchpth + else: + removedfile = patchpth + elif line.startswith('+++ '): + addedfile = patchedpath(line) + if not addedfile: + break + elif line.startswith('*** '): + copiedmode = True + removedfile = patchedpath(line) + if not removedfile: + break + else: + removedfile = None + addedfile = None + + if addedfile and removedfile: + if removedfile == '/dev/null': + mode = 'A' + elif addedfile == '/dev/null': + mode = 'D' + else: + mode = 'M' + if srcdir: + fullpath = os.path.abspath(os.path.join(srcdir, addedfile)) + else: + fullpath = addedfile + filelist.append((fullpath, mode)) + + return filelist + class PatchTree(PatchSet): def __init__(self, dir, d): |